"It's amazing given the media's ridicule of those of us who posed the question and did six years of investigative work to try to determine Barack Obama's eligibility – a question that has still not been answered, by the way, or even debated rationally on the facts we now know."

Farah said it's "precisely why it was so important to pay attention to the precedent Obama set by refusing to release his birth certificate for two years and then releasing one that was labeled fraudulent by the only law enforcement investigators who have examined it, as well as dozens of document experts."

He said the questions that remain include where Obama was born, whether or not his Hawaii birth certificate is accurate and shows he is a "natural born citizen."

Obama's father, according to the document, was a Kenyan citizen, Farah said, and, therefore, "unable to confer 'natural born citizen' status on his son."

Farah noted there are more unanswered questions about Obama:

Did he give up his status as an American citizen when he moved to Indonesia with his family? The U.S. government gave his mother specific instructions about how to protect her son's basic citizenship while living in Indonesia. She was advised to homeschool him rather than enroll him in an Indonesian school. Did she listen? No.

Did Obama return and enroll in college as a "foreign student," as many suspect? We don't know. He has never released any college records.

But, most importantly, without an uncontested, clean, verified birth certificate, we not only don't know where he was born but we don't even know for certain who his parents were – and that is the key question when it comes to "natural born citizen" status.

He pointed out that during the publicity campaign for his first book, Obama even claimed to have been born in Kenya.

Farah wrote: "But I'm not here to defend Ted Cruz's eligibility. I'm here to say that America needs one standard of eligibility – not one for Republicans and another for Democrats, not one for conservatives and another for liberals, not one for people we like and another for people we don't like."